盾构隧道施工同步注浆材料流动性测试方法及影响因素分析Test Method and Influencing Factors of Fluidity of Synchronous Grouting Material in Shield Tunnel Construction
黄大维;罗仲睿;罗文俊;徐长节;石海斌;张丽;
摘要(Abstract):
现有的盾构隧道施工同步注浆材料流动性通常利用稠度仪进行测试,人为操作水平对试验结果影响很大,试验结果的随机性也很大,且试锥沉入深度与浆液在注浆管内的流动阻力并无直接关系。为此,研制了1套同步注浆材料流动性测试装置,利用该装置可直接测得浆液在注浆管内的压力损失;提出以注浆材料在注浆管中单位长度的压力损失作为注浆材料流动性评价指标,并以注浆材料中骨料颗粒的表面积与浆体的体积之比(简称“表体比”)作为分析注浆材料流动性的影响参数,推导出表体比计算式;采用研发的流动性测试装置对现场所用同步注浆材料及室内配制不同表体比的注浆材料试样进行流动性测试及对比分析。结果表明:研制的同步注浆材料流动性测试装置可行;注浆材料表体比为其流动性的主要影响参数;注浆材料在注浆管内单位长度的压力损失随着初始压力的增加呈近似线性增长;注浆材料中骨料(粒径大于0.075 mm的固体颗粒)含量越多即表体比越大,其在注浆管内单位长度的压力损失也越大。
关键词(KeyWords): 盾构隧道;同步注浆;注浆材料;压力损失;表体比
基金项目(Foundation): 国家自然科学基金资助项目(52078213,U1934208,51725802);; 江西省杰出青年科学基金资助项目(20192ACBL21003);; 江西省技术创新引导类计划项目(20203AEI008)
作者(Authors): 黄大维;罗仲睿;罗文俊;徐长节;石海斌;张丽;
参考文献(References):
- [1]田科.水泥的强度和标准稠度试验[J].产业科技创新,2020,2(2):52-53.(TIAN Ke.Strength and Standard Consistency Test of Cement[J].Industrial Technology Innovation,2020,2(2):52-53.in Chinese)
- [2]LIANG Y,ZHANG J,LAI Z S,et al.Temporal and Spatial Distribution of the Grout Pressure and Its Effects on Lining Segments during Synchronous Grouting in Shield Tunnelling[J].European Journal of Environmental and Civil Engineering,2020,24(1):79-96.
- [3]徐霁,梁瑞标.水泥标准稠度试验影响因素定量分析[J].砖瓦,2018(4):20-22.(XU Ji,LIANG Ruibiao.Quantitative Analysis of Effect Factors of Cement Standard Consistency Test[J].Brick-Tile,2018(4):20-22.in Chinese)
- [4]RYU Y M,KWON Y S,KIM T H,et al.Slurry Clogging Criteria for Slurry Shield Tunnelling in Highly Permeable Ground[J].KSCE Journal of Civil Engineering,2019,23(6):2784-2793.
- [5]LI T,LIU B,LI Y,et al.Properties of Foam and Soil Improvements for Earth-Pressure Balance Shield Construction in Red Soils[J].Advanced Materials Research,2011,243/244/245/246/247/248/249:2834-2841.
- [6]张爱玲,韩美玲.水泥标准稠度用水量测定方法探析[J].建材技术与应用,2012(10):21-22.(ZHANG Ailing,HAN Meiling.Discussion on Determination Method of Water Consumption for Cement Standard Consistency[J].Research&Application of Building Materials,2012(10):21-22.in Chinese)
- [7]李亮,李泽刚.浅析影响水泥标准稠度测定的因素[J].科技创新导报,2010,7(29):50.(LI Liang,LI Zegang.Analysis on the Factors Affecting the Determination of Cement Standard Consistency[J].Science and Technology Herald,2010,7(29):50.in Chinese)
- [8]万泽恩,李树忱,赵一民,等.富水地层盾构隧道同步注浆惰性充填材料配比与试验研究[J].土木工程学报,2021,54(7):123-132.(WAN Zeen,LI Shuchen,ZHAO Yimin,et al.Experimental Study on Mix Proportion of Inert Filling Materials for Synchronous Grouting of Shield Tunnel in Water-Rich Strata[J].China Civil Engineering Journal,2021,54(7):123-132.in Chinese)
- [9]ZHANG Z M,LIN C G,WU S M.Slurry Shield Tunnelling in Clayey Soils:Typical Problems and Countermeasures[J].Advanced Materials Research,2011,243/244/245/246/247/248/249:2944-2947.
- [10]QIAO J L,FAN Y L,LIU B,et al.The Research of Backfill Grouting Pressure in Shield Tunneling[J].Advanced Materials Research,2012,446/447/448/449:2240-2245.
- [11]黄德楷,王小刚,夏正茂,等.粉煤灰掺量对盾构隧道同步注浆浆液性能的影响试验研究[J].煤炭加工与综合利用,2019(8):74-77.(HUANG Dekai,WANG Xiaogang,XIA Zhengmao,et al.Experimental Study on the Effect of Fly Ash Content on the Performance of Synchronous Grouting Slurry in Shield Tunnel[J].Coal Processing&Comprehensive Utilization,2019(8):74-77.in Chinese)
- [12]ZHONG X C,QIN W K,WANG H.Test of Solidification Characteristics of Grouting and the Effect on Strata Deformation in Shield Tunnelling[J].Advanced Materials Research,2012,568:80-84.
- [13]GAO L X,YANG X J,QIN L K.Finite Element Analysis of the Surface Settlement Induced by the Shield Tunnel Construction[J].Applied Mechanics and Materials,2014,501/502/503/504:111-114.
- [14]FANG Y,HE C,NAZEM A,et al.Surface Settlement Prediction for EPB Shield Tunneling in Sandy Ground[J].KSCE Journal of Civil Engineering,2017,21(7):2908-2918.
- [15]金立忠,彭国峰,韩爱民,等.同步注浆浆液流动性指标适用性对比试验研究[J].科学技术与工程,2016,16(26):303-307.(JIN Lizhong,PENG Guofeng,HAN Aimin,et al.Contrast Test for the Applicability of the Fluidity Index of Simultaneous Grouting Slurry[J].Science Technology and Engineering,2016,16(26):303-307.in Chinese)
- [16]CHEN T L,PANG T Z,ZHAO Y,et al.Numerical Simulation of Slurry Fracturing during Shield Tunnelling[J].Tunnelling and Underground Space Technology,2018,74:153-166.
- [17]宋天田,周顺华,徐润泽.盾构隧道盾尾同步注浆机理与注浆参数的确定[J].地下空间与工程学报,2008,4(1):130-133.(SONG Tiantian,ZHOU Shunhua,XU Runze.Mechanism and Determination of Parameters of Synchronous Grouting in Shield Tunneling[J].Chinese Journal of Underground Space and Engineering,2008,4(1):130-133.in Chinese)
- [18]曾剑锋.海域环境盾构同步注浆浆液物理力学性质及优化配比研究[D].北京:北京交通大学,2020.(ZENG Jianfeng.Physical Properties and Ratio Optimization of Synchronous Grouting Material for Submarine Shield Tunnel[D].Beijing:Beijing Jiaotong University,2020.in Chinese)
- [19]周晔,朱瑶宏,丁修恒,等.机械法联络通道壁后注浆材料优化配比研究及应用[J].宁波大学学报:理工版,2020,33(4):55-62.(ZHOU Ye,ZHU Yaohong,DING Xiuheng,et al.Application of Optimized Proportion of Grouting Material Posterior to Mechanical Connection Channel[J].Journal of Ningbo University:Natural Science&Engineering Edition,2020,33(4):55-62.in Chinese)
- [20]游永锋,梁奎生,谭华灵.盾构快速掘进下同步注浆材料优化配合比设计[J].隧道建设,2012,32(6):816-820.(YOU Yongfeng,LIANG Kuisheng,TAN Hualing.Optimization of Mixing Proportion of Grout for Simultaneous Grouting in Shield Tunneling[J].Tunnel Construction,2012,32(6):816-820.in Chinese)
- [21]苟长飞.盾构隧道壁后注浆浆液扩散机理研究[D].西安:长安大学,2013.(GOU Changfei.Study on the Grouts Diffusion Mechanism of Shield Tunnel Back-Filled Grouts[D].Xi'an:Chang'an University,2013.in Chinese)
- [22]赵天石.泥水盾构同步注浆浆液试验及应用技术研究[D].上海:同济大学,2008.(ZHAO Tianshi.Study on Mortar Material and Application of Tail Void Grouting of Slurry Shield Tunnel[D].Shanghai:Tongji University,2008.in Chinese)
- [23]CAO Y H,KOU X Q.Short-Distance Undercrossing of Shield Tunneling on Existent Tunnel in Soft Soil Area[J].Applied Mechanics and Materials,2012,170/171/172/173:1554-1558.
- [24]ZHANG Z G,HUANG M S.Geotechnical Influence on Existing Subway Tunnels Induced by Multiline Tunneling in Shanghai Soft Soil[J].Computers and Geotechnics,2014,56:121-132.
- [25]WANG T.Experiment of Shield Synchronized Grouting Slurry Using Waste Sand in Sand Layer[J].Applied Mechanics and Materials,2014,638/639/640:1600-1605.
- [26]ZHOU S H,JI C.Tunnel Segment Uplift Model of Earth Pressure Balance Shield in Soft Soils during Subway Tunnel Construction[J].International Journal of Rail Transportation,2014,2(4):221-238.